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Finding the Fourth Proportional to 200.90, 277.09 and 126.18

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Solution

The fourth proportional to 200.90, 277.09 and 126.18 is: 174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.90 : 277.09 = 126.18 : x
  2. Step 2: Convert to fraction form
    200.90/277.09 = 126.18/x
  3. Step 3: Cross multiply
    200.90x = 277.09 × 126.18
  4. Step 4: Simplify right side
    200.90x = 34,962.90
  5. Step 5: Solve for x
    x = 34,962.90/200.90
  6. Step 6: Final answer
    x = 174.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.